Sofa



FIG. 1 is a front perspective view of a first embodiment of a sofa showing my new design;

FIG. 2 is a front, left, top perspective view;

FIG. 3 is a left perspective view;

FIG. 4 is a second left perspective view;

FIG. 5 is a rear perspective view;

FIG. 6 is a second rear perspective view;

FIG. 7 is a right perspective view;

FIG. 8 is a front perspective view of a second embodiment of a sofa showing my new design;

FIG. 9 is a left perspective view;

FIG. 10 is a front, right, top perspective view;

FIG. 11 is a right perspective view;

FIG. 12 is a second right perspective view;

FIG. 13 is a rear perspective view; and,

FIG. 14 is a rear, left, top perspective view. 

CLAIM The ornamental design for a sofa, as shown and described. 